323000021 has 2 divisors, whose sum is σ = 323000022. Its totient is φ = 323000020.

The previous prime is 322999997. The next prime is 323000033. The reversal of 323000021 is 120000323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306075025 + 16924996 = 17495^2 + 4114^2 .

It is a cyclic number.

It is not a de Polignac number, because 323000021 - 2²² = 318805717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 322999966 and 323000011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323000621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161500010 + 161500011.

It is an arithmetic number, because the mean of its divisors is an integer number (161500011).

Almost surely, 2^323000021 is an apocalyptic number.

It is an amenable number.

323000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

323000021 is an equidigital number, since it uses as much as digits as its factorization.

323000021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 323000021 is about 17972.2013398470. The cubic root of 323000021 is about 686.1212184536.

Adding to 323000021 its reverse (120000323), we get a palindrome (443000344).

The spelling of 323000021 in words is "three hundred twenty-three million, twenty-one", and thus it is an aban number.